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A high-velocity centrifuge used in the separation of colloidal or submicroscopic particles.

ul′tra·cen·trif′u·gal (-trĭf′yə-gəl, -trĭf′ə-gəl) adj.
ul′tra·cen·trif′u·gal·ly adv.
ul′tra·cen′tri·fu·ga′tion (-fyo͝o-gā′shən) n.
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Noun1.ultracentrifugation - centrifugation at very high speedsultracentrifugation - centrifugation at very high speeds  
centrifugation - the process of separating substances of different densities by the use of a centrifuge
References in periodicals archive ?
Evolocumab significantly reduced LDL-C, as measured by the accepted standard, preparative ultracentrifugation, from baseline at week 52 compared to placebo.
063 kg/L as obtained by preparative ultracentrifugation, often referred to as the "broadcut" LDL fraction.
The HDL used was isolated from fresh serum by preparative ultracentrifugation at a density range of 1.
Results from the efficacy analysis showed mean reductions in LDL-C from baseline to week 12, as measured by preparative ultracentrifugation, ranged from 40 to 59 percent across AMG 145 doses in comparison to 0.
Although preparative ultracentrifugation is by no means a perfect method for lipoprotein isolation or quantification, particularly for applications involving apolipoprotein analysis, it continues to provide a useful frame of reference for the many other methods that have been used to characterize and quantify these fascinating macromolecular complexes.

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